2.2 Estimating Overall Forces Procedure to estimate the loads: -Determine building volume or surface area -Apportion total mass or exposed surface area -Determine the EO or wind effect of each component -Sum component effects to reveal overall effect2.2 Estimating Overall Forces Procedure to estimate the loads: -Determine building volume or surface area -Apportion total mass or exposed surface area -Determine the EQ or wind effect of each component -Sum component effects to reveal overall effect